Datasheet LTC4317 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual I2C/SMBus Address Translator |
| Pages / Page | 16 / 1 — FeaTures. DescripTion. Allows Multiple Slaves with the Same Address to. … |
| File Format / Size | PDF / 229 Kb |
| Document Language | English |
FeaTures. DescripTion. Allows Multiple Slaves with the Same Address to. Coexist on the Same Bus
Model Line for this Datasheet
Text Version of Document
LTC4317 Dual I2C/SMBus Address Translator
FeaTures DescripTion
n
Allows Multiple Slaves with the Same Address to
The LTC®4317 enables the hardwired address of one or more
Coexist on the Same Bus
I2C or SMBus slave device to be translated to a different ad- n
Resistor Configurable Address Translation
dress. This allows slaves with the same hardwired address to n
No Software Programming Required
coexist on the same bus. Only discrete resistors are needed n Compatible with SMBus, I2C and I2C Fast Mode to select the new address and no software programming is n Pass-Through Mode Allows General Call Addressing required. Up to 127 different address translations are available. n ±4kV HBM ESD Ruggedness The LTC4317 incorporates a pass-through mode which dis- n Level Translation for 2.5V, 3.3V and 5V Buses ables the address translation and allows general call address- n Stuck Bus Timeout ing by the master. The LTC4317 is designed to automatically n Prevents SDA and SCL Corruption During Live Board recover from abnormal bus conditions like bus stuck low or Insertion and Removal premature STOP bits. n Support Bus Hot Swap n 16-Lead DFN 5mm × 3mm Package The LTC4317 has two output channels for two different sets of slaves. The input channels are tied together to a com- mon set of pins to reduce the pin count and package size.
applicaTions NUMBER OF INPUT NUMBER OF OUTPUT PART NUMBER CHANNELS CHANNELS
n I2C, SMBus Address Expansion LTC4316 1 1 n Address Translation LTC4317 1 2 n Servers LTC4318 2 2 n Telecom L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6356140, 6650174, 7032051, 7478286. Patent pending.
Typical applicaTion
3.3V 5V
TRANSLATES
VCC SCL SCLIN SCLOUT1
BY 0x02
SCL SLAVE# 1 MASTER ADDRESS LTC4317 R/W ACK 0x36 START ADDRESS BITS BIT BIT SDA SDAIN SDAOUT1 SDA a6 a5 a4 a3 a2 a1 a0
SENDS RECEIVES
SCLIN
ADDRESS 0x34 ADDRESS 0x36
3.3V ENABLE1 READY1 SDAIN 0 0 1 1 0 1 0 0 = 0x34 ENABLE2 READY2 5V
TRANSLATES
TRANSLATION
BY 0x04
SCL BYTE 0 0 0 0 0 0 1 0 = 0x02 SCLOUT2 SLAVE# 2 ADDRESS SDAOUT1 0 0 1 1 0 1 1 0 = 0x36 0x36 4317 TA01b SDAOUT2 SDA XORH2
RECEIVES
GND XORH1
ADDRESS 0x30
XORL2 XORL1 3.3V 845k 61.9k 93.1k 4317 TA01a 4317fa For more information www.linear.com/LTC4317 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Timing Diagram Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n
Allows Multiple Slaves with the Same Address to
The LTC®4317 enables the hardwired address of one or more
Coexist on the Same Bus
I2C or SMBus slave device to be translated to a different ad- n
Resistor Configurable Address Translation
dress. This allows slaves with the same hardwired address to n
No Software Programming Required
coexist on the same bus. Only discrete resistors are needed n Compatible with SMBus, I2C and I2C Fast Mode to select the new address and no software programming is n Pass-Through Mode Allows General Call Addressing required. Up to 127 different address translations are available. n ±4kV HBM ESD Ruggedness The LTC4317 incorporates a pass-through mode which dis- n Level Translation for 2.5V, 3.3V and 5V Buses ables the address translation and allows general call address- n Stuck Bus Timeout ing by the master. The LTC4317 is designed to automatically n Prevents SDA and SCL Corruption During Live Board recover from abnormal bus conditions like bus stuck low or Insertion and Removal premature STOP bits. n Support Bus Hot Swap n 16-Lead DFN 5mm × 3mm Package The LTC4317 has two output channels for two different sets of slaves. The input channels are tied together to a com- mon set of pins to reduce the pin count and package size.
applicaTions NUMBER OF INPUT NUMBER OF OUTPUT PART NUMBER CHANNELS CHANNELS
n I2C, SMBus Address Expansion LTC4316 1 1 n Address Translation LTC4317 1 2 n Servers LTC4318 2 2 n Telecom L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6356140, 6650174, 7032051, 7478286. Patent pending.
Typical applicaTion
3.3V 5V
TRANSLATES
VCC SCL SCLIN SCLOUT1
BY 0x02
SCL SLAVE# 1 MASTER ADDRESS LTC4317 R/W ACK 0x36 START ADDRESS BITS BIT BIT SDA SDAIN SDAOUT1 SDA a6 a5 a4 a3 a2 a1 a0
SENDS RECEIVES
SCLIN
ADDRESS 0x34 ADDRESS 0x36
3.3V ENABLE1 READY1 SDAIN 0 0 1 1 0 1 0 0 = 0x34 ENABLE2 READY2 5V
TRANSLATES
TRANSLATION
BY 0x04
SCL BYTE 0 0 0 0 0 0 1 0 = 0x02 SCLOUT2 SLAVE# 2 ADDRESS SDAOUT1 0 0 1 1 0 1 1 0 = 0x36 0x36 4317 TA01b SDAOUT2 SDA XORH2
RECEIVES
GND XORH1
ADDRESS 0x30
XORL2 XORL1 3.3V 845k 61.9k 93.1k 4317 TA01a 4317fa For more information www.linear.com/LTC4317 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Timing Diagram Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
